Comprehensive App Overhaul: UI/UX & Performance

I'm seeking a skilled app developer/designer to revitalise my application. The project involves a complete redesign of the User Interface, User Experience, and Functionality across both iOS and Android platforms. The principal aim of this overhaul is to enhance the app's performance.

Key Responsibilities:
- Redesigning the app's User Interface to be more intuitive and user-friendly
- Enhancing the User Experience to boost usability and satisfaction
- Improving the app's Functionality for seamless performance across devices

Ideal candidates should have:
- Extensive experience in UI/UX design
- Proficiency in app development for both iOS and Android
- A proven track record of improving app performance
- A keen eye for modern design trends
- Able to propose ideas to enhance the app flow

Please share your portfolio showcasing similar projects you've completed.